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cos^(4)alpha+sin^(4)alpha-6sin^(2)alpha ...

`cos^(4)alpha+sin^(4)alpha-6sin^(2)alpha cos^(2)alpha=`

A

`cos 2alpha`

B

`sin 2alpha`

C

`cos4alpha`

D

`sin4alpha`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-MULTIPLE & SUBMULTIPLE ANGLES-PRACTICE EXERCISE
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